Expression Builder for Accrual Matrix rule - combining LOS & Person assignment no.

Summary

Expression Builder for Accrual Matrix rule - combining Length of service & Person assignment numbers as criteria

Content

Hi,

As per the requirement, I have configured Absence using Expression builder, can you please let me know why the expression builder is not satisfying  the below conditions.

Rule 1: Employee with service 0 to 120, we have used expression as "(([LengthOfService.LOSinMonths] > 0    AND  
[LengthOfService.LOSinMonths] <=120)   AND
([Person.AssignmentNumber]  != 'E95285' OR
[Person.AssignmentNumber]  != 'E96293'))" will get Accrual 15"

Rule2: "(([LengthOfService.LOSinMonths] > 120    AND
  [LengthOfService.LOSinMonths] <=240)   AND
([Person.AssignmentNumber] != 'E95285' OR
[Person.AssignmentNumber] != 'E96293'))" - will get accrual 20

Rule 3:"(([LengthOfService.LOSinMonths] < 241) AND
([Person.AssignmentNumber] ='E95285' OR